| 摘要 |
A surgical assembly comprising a needle tip (100) connected to a flexible tube (102) filled with a magnetorheo logical (MR) fluid. In order to guide the assembly through body tissue along a desired arbitrary path, the physician successively bends the needle tip (100) to re-orient it toward a desired direction of travel, applies a magnetic field in relation to the MR fluid to cause it to stiffen, applies forward pressure to the device to move it in the desired direction and then removes the magnetic field to return the MR fluid to its initial state.
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